Description:
Lambda Exonuclease is a highly processive exonuclease which selectively degrades the 5'-phosphorylated strand of double-stranded DNA via the stepwise 5' to 3' release of mononucleotides from duplex DNA. Lambda Exonuclease is inactive against 5'-hydroxyl termini(1), and will not initiate excision at a nick or gap(2), though it will degrade a 5'-overhanging tail from duplex DNA at a greatly reduced rate.

Specific Activity: 100,000 U/mg

Application:
Catalyzes the removal of 5'-mononucleotides from duplex DNA.

Source:
Purified from a strain of E. coli that overexpresses the exonuclease gene from bacteriophage Lambda.